中外钢结构规范腹板有效宽度确定方法对比  

COMPARISON ON WEB EFFECTIVE WIDTH AMONG CHINESE AND FOREIGN DESIGN CODES OF STEEL STRUCTURES

作　　者：张庆芳[1] 张志国[1] 

机构地区：[1]石家庄铁道学院,石家庄050043

出　　处：《钢结构》2008年第5期45-48,52,共5页Steel Construction

摘　　要：当组成钢构件截面的板件长细比超过限值时,必然引起构件的整体承载能力降低。此时,对于腹板,采用有效截面的概念利用屈曲后强度。对腹板有效宽度的取值各种钢结构规范规定不一,通过对比分析发现,我国《钢结构设计规范》(GB50017-2003)的规定偏于安全。The bearing capacity of compression member is decreased when plate elements in the column cross section are slender. For web, the effective width concept is adopted to make use of post buckling strength. There are various equations to determine effective width among design codes of steel structures. Comparison among these provisions reflects the fact that the Code for Design of Steel Structure（GB 50017--2003） will result in a conservative estimate.

关 键 词：有效宽度 AISC2005 EC3 

分 类 号：TU391-65[建筑科学—结构工程]